Abys Orbit

The developers describe how their game uses AI generated content like this:

Most of the 2D art in Abys Orbit is AI-assisted, generated with Google Gemini during development. Ship and NPC sprite sheets begin as Gemini concept images, are converted to 3D meshes with Meshy.ai, and are then rendered to 2D sprites in Blender. One dashboard background is a NASA public-domain photograph revised with AI. All AI-generated assets are reviewed and edited by us before shipping. The following content is NOT AI-generated: rank insignia (drawn by hand in Adobe Illustrator), the Scout ship model (a commercially licensed 3D asset rendered in 3ds Max), UI and research icons (licensed from CraftPix under their commercial license), two NASA public-domain images, and all audio, which we produced ourselves. No AI-generated content is created at runtime; all generation happens during development.

Required on Steam store pages since 2024. It covers content that ships in the game, on its store page or in its marketing — Valve does not require a disclosure for AI tools used during development, so this says nothing either way about how the game was made. Check it on Steam.